基于RMA2模型的滩地风机基础水动力模拟研究

基于RMA2模型,以雷诺形式N-S方程为基础、以加权余量伽辽金有限元为基本求解方法,在实测地形上对河道进行概化,采用二次三角形网格离散模拟区域并进行局部加密,模拟了电场建设前后辽河滩地风机基础周边河段的水位、流速、流场分布等特性。结果表明,电场建成后对河道水位、流速影响均较小,虽存在局部绕流现象,但影响范围较小,绕流迅速消退,为电场建设和河道防洪评价提供了科学依据。

Hydrodynamic Simulation of Wind Generator Foundation in Overbank Based on RMA2 Model

Based on RMA2 model and Reynolds N-S equations,the river channel is generalized on measured terrain by taking weighted residuals Galerkin finite element as a basic solution method.And the secondary triangle mesh is applied to discrete and encrypt partially simulation domain.Then it simulates the river water level,flow velocity,flow field distribution characteristics around the wind generator foundation in Liaohe river overbank before and after wind power plant being built.The results show that the river water level and velocity has little impact after power plant constructed;although existence of local bypass flow phenomenon,the impact has a smaller range and it vanishes rapidly,which provides scientific basis for wind power plant construction and rive flood prevention evaluation.